Work done of 11/5/09 that Nadia and Alison and Will
Fine grains
Smooth grain shape
High luster
Clumping
Possibly hygroscopic
Granule-one of numerous particles forming a larger unit Powder- matter in a finely divided state: particulate matter Crystal-a body that is formed by the solidification of a chemical element, a compound, or a mixture and has a regularly repeating internal arrangement of its atoms and often external plane faces
Look at the following image of a powder. Just by looking at it, type out your observations. Everyone should contribute something to the observation, I don't want Will doing it all by himself again. This is not a solo event.
(Hint: color, shape, size of crystals, and luster are important visual characteristics)
When you are done, post your observations on the wiki.
Defined. Electrolyte-a substance that, when dissolved, becomes a conductor
Endothermic-a reaction absorbing heat
Exothermic-a reaction giving off heat
Hydronium ion-H3O
Hydroxide ion-OH -
Insoluble-cannot dissolve in a liquid
Unsaturated-capable of absorbing more of something
Saturated-unable to absorb more of something at a given temperature and pressure
Supersaturated-containing an amount of a substance greater than that required for saturation
11/4/09 Colloid – semi soluble Soluble – can be dissolved in a liquid Solute – dissolved substance Solvent – a substance capable of dissolving things in it Solution – solid mixed with liquid Solubility – the quality of being soluble Hydrophilic – soluble in water Hydrophobic –not soluble in water
11/3/09
Go through the Powerpoint provided by the event supervisor, to familiarize yourself with the event. Focus on the difference between making an observation and making an inference. You can lose points if you make inferences on the test.
Work done of 11/5/09 that Nadia and Alison and Will
Fine grains
Smooth grain shape
High luster
Clumping
Possibly hygroscopic
Granule-one of numerous particles forming a larger unit
Powder- matter in a finely divided state: particulate matter
Crystal-a body that is formed by the solidification of a chemical element, a compound, or a mixture and has a regularly repeating internal arrangement of its atoms and often external plane faces
Assignment for 11/5:
Take a look at this:
http://soinc.org/cant_judge_powder_b
Look at the following image of a powder. Just by looking at it, type out your observations. Everyone should contribute something to the observation, I don't want Will doing it all by himself again. This is not a solo event.
(Hint: color, shape, size of crystals, and luster are important visual characteristics)
When you are done, post your observations on the wiki.
Defined.
Electrolyte-a substance that, when dissolved, becomes a conductor
Endothermic-a reaction absorbing heat
Exothermic-a reaction giving off heat
Hydronium ion-H3O
Hydroxide ion-OH -
Insoluble-cannot dissolve in a liquid
Unsaturated-capable of absorbing more of something
Saturated-unable to absorb more of something at a given temperature and pressure
Supersaturated- containing an amount of a substance greater than that required for saturation
11/4/09
Colloid – semi soluble
Soluble – can be dissolved in a liquid
Solute – dissolved substance
Solvent – a substance capable of dissolving things in it
Solution – solid mixed with liquid
Solubility – the quality of being soluble
Hydrophilic – soluble in water
Hydrophobic –not soluble in water
11/3/09
Go through the Powerpoint provided by the event supervisor, to familiarize yourself with the event. Focus on the difference between making an observation and making an inference. You can lose points if you make inferences on the test.